Basic pitching improvement workout

I am in need of a basic pitching workout, i need to add some velocity to go from mid-high 70s to low-mid 80s. Im around 5’9 and 150. Any advice would be great.

Steven Ellis owner of this site has a program called Tuff Cuff, that is a very good program.

Eric Cressey has some pretty good info on his sight, especially check out Maximum Stregnth